My daughter just turned 3 months old and she just rolled onto her belly, is this nomal for her age?

Rolling over: Rolling over is usually perfected between 4 and 6 months of age. Perhaps, your baby rolled over by mistake especially if very active? If not, she may be advanced!

It happens: A baby can flip,itself off a changing table at birth, so parents need to be attentive to their spontaneous events.They don't have muscle control enough to decide to turn over until about 4-5 months, but you must be prepared for random events.